[R] Time Series of Histograms

[Enrico R. Crema]

Dear List,

I have a set of distributions recorded at an equal interval of time and I would like to plot them as series of horizontal histograms (with the x-axis representing time, and y-axis representing the bins) since the distribution  shifts from unimodal to multimodal in several occasions. What I would like to see is something close to a violinplot, but I do not want a kernel density estimate...
Any suggestions or advice will be great!

Thanks in Advance,
Enrico